Mixing machine



July 1o, 1934.` J, PARKER 1,965,905

MIXING MACHINE Filed D eC. 2, 1927 2 Sheets-Shed'I l L a I? H f ff 5 Ing. :1 'fikcfw j j n:

// INVENTOR.

I@ L Wb@ hw July 10, 1934. 1

' L. J. PARKER 1,965,905

MIXING MACHINE 'FiledDem 2, 1927 2 Sheets-Sheet 2 A TTORNEYS.

material receiving Patented July 10, 1934 1,965,905 MIXING MACHINE Linus J. Parker, Dayton, Ohio, assignor, byV

mesne assignments, to North East Appliance Corporation, Rochester, N. Y., a corporation of New York Application December 10 Claims.

This invention relates to machines for disintegrating mixing or stirring materials-and is particularly concerned with-machines of this character adapted to handle foods or beverages.

y One object of the invention is the provision of a machine of this character having a rotatable spinner arranged closely adjacent a part of a chamber, the arrangement being such that the chamber may be adjusted to different positions relative to the spirmer to adjust the clearance between thev adjacent spinner and chamber parts.

Further objects and advantages of the invention relate to certain details of construction providing for ease in cleaning and ease of adjustment of the various parts of the machine, such as are more fully set forth in the following description and in theA drawings, in which Fig. 1 is a side elevation, shown partly in section, of a mixing machine embodying the present invention;

Fig. 2 is a top plan view of the material receiving chamber;

Fig-3 is a section on the line 3--3 of Fig. 1 showing a portion of the spiral shape of the material receiving chamber;

Fig. 4 is a sectional view of apart of the machine showing the adjusting means by which the spinner clearance is changed;

Fig. 5 is a front elevation of the adjusting means;

Fig. 6 is a developed view of thel projection or iinger of the spinner shaft; and

Fig. '1 is a perspective view of the spinner projection key.

Referring more particularly to the drawings by reference numerals the mixing machine embodies a hollow upright standard 10 to the upper end of which is fastened a casting llwhich serves as a motor support for the electric motor 12. The motor 12 has an armature'shaft 13 which extends downwardly through an opening in the motor supporting casting and carries a spinner 14 at its lower end.: This spinner is positioned closely adjacent a receiving chamber 16 which is adjustablyfastened to the supporting casting 11. The machine herein disclosed is particularly adapted for the mixing o'r disintegration of foodstuffs or beverages, which are introduced into the material receiving chamber '16 through a frustro-conical extension 18 of the casing, detachably socketed in the cylindrical upper end thereof. The

material entering the chamber is broken up and is rapidly whirled through the small .space beas shown at 24, projects inwardly throat part 15` of a :material4 2, 1927, Serial No. 237,158

(C1. ss-is) tween the chamber throat portion 15 and the frustro-conical surface 19 of the spinner plate 20 which may be rapidly rotated by the electric motor. The mixed and disintegrated foodstuis flow down through the guide spout from which they maybe collected in any suitable vessel.

The material receiving chamber 16 extends upwardly to provide an upwardly spiraling passage from the throat part 15. The spinner, in the construction shown, is rotated clockwise by the motor 05 when viewedfrom above, and tends to throw off and splash liquids which are supplied to the hopper, due to the high velocity of rotation of the spinner. This clockwise rotation of the spinner, as indicated by the arrow in Fig. 3, causes a tendency for the liquid to be splashed or thrown off in a direction tangential to the peripheral portions of the spinner. This throwing of the liquid is prevented by reason of the upwardly spiraling formv of the chamber 16 which curves outwardly 'I6 in a generally anticlockwise direction as viewed from above. The inner wall of the chamber 16, quite a distance at that part of the passage which is on the inside of the spiral adjacent the lower end of the passage. Thus the portion 24 retains any fluid which would tend to be thrown or splashed out of the chamber from the point 25, and thus effectively retains the liquid on which the spinner is operating within the chamber until it passes through the throat' opening.

Adjustment of the distance between the conical outer surface 19 of the spinner plate and the adjacent correspondingly tapered inner surface of the throat portion l5 of the material receiv- 90 ing chamber is permitted to provide for a large or for a minimum opening between the relatively rotating surfaces and to permit the interior ofv the chamber and the spinner to be cleaned after the machine has been used. For this purpose the chamber mounted on the supporting casting v11 so that in the direction of the axis of .the spinner. As seen in Fig. 1, the chamber casting 16 is provided with a rearwardly extending lug 27 provided with 100 a bore 28 which is parallel to the axis of the A rod 29 has-a threaded lower end 3.0 of reduced diameter nextending through the bore 28, the nut 31 which'is threaded on the lower end of the reduced diameter portion of this rod serving to fasten the rod and the chamber 16 rigidly together. The upper end of the rod extends `through guide surfaces 33 and 34 in the supporting casting 11 and one side of the rod is provided with rack teeth 35 which are engaged 110 by a pinion 37 rotatably mounted on a horizontal so as to fasten in place to the end of the shaft 45. axis in the supporting casting 1l. Rotational By reason of this arrangement thespring exerts 5 the elevation of the rod 29 and consequently in gagemenhatrall times and thusholds the cham- V80 the raising of the chamber casting 16 with relaber to whatever position it has been adjusted. tion to the supporting casting 11 and with rela- The motor"shaft 13 extends downwardly from tionto the spinner. If the chamber 16 is raised the motor armature through an opening 60 in until the upper end of the lug 27 abuts the lower k\the`boss 61 of the motor supporting casting. The l0 end of the bearing member 38 which receives the space between the bottom of this boss and the ad- 85 rod 29, there will be a considerable space between jacent upper part of the material receiving chamthe outer peripheral surface of the spinner plate ber 16 slightly exceeds the distance between the 20 and the adjacent portions of the throat part l5 upper and lower `limiting positions of the chamof the chamber; and when the chamber is thus ber. The upper wall 62 of of the chamber 16 is 15 raised the various parts of the machine within provided with a circular hole 63 and within this 90 the chamber 16 can be very easily cleaned, and hole the motor shaftis provided with a bushing 64 seeds and other food products which have not which is rigidly attached in any suitable manner passed by the spinner when the machine was to the shaft. This bushing is provided with ex- Operating, can be removed. Such retained `lnaternal left-hand threads so that as the motor 20 terial is thrownoff of the spinner if the mOi/0I spins clockwise as viewed from above the threads 95 is running and easily passes through the large .will return any' material which may be splashed space provided outside of the spinner when the up and which would tend to pass up through the chamber is in its raised position. The forward opening 63. 'I'hese threads are preferably formed upper portion of the Chamber 16 is provided with so that the lowv r sides of'the threads extend in a in the forward portion of the supporting casting or at right angles to the shaft axis. The opening 11 in a slidable manner to guide the "upward 63 in the upper wall of the chamber 16 is slightly movements of the chamber. larger than the outer overall distance across the A The gear orpinion 37 by which the raising or threads'65 of the bushing so that the outer parts 3o lowering of the material receiving chamber is of the threads will not touch or rub on the inner 105 effeeted iS Supported upon a transverse Shaft 45 surface of the opening 63. This slight clearance 0r iS formed aS an integral Dart of this Shaft. also permits aslight adjustment of the position of o The Shaft 45 iS rotatably mounted in a bearing the material receiving chamber with relation to portion 46 of the supporting casting 11 and to one the axis of the motor shaft. To-obtain exact coend of the Shaft iS Xed a manually Operable hanincidence between the axes of the peripheral sur- 110 N dle 47 which is preferably located at the left side face of the spinner and of the correspondinglyof the machine so that it can be conveniently tapered surface of the chamber throat 15, aslight operated by the left hand of one using the deveev clearance is provided between the hole 28 in the When the chamber 16 is in its lowermost operalug 27 of the material receiving chamber and the tive position so that a minimum Clearance 0f reduced cylindrical end 30 of the rod 29, so that 1`15 Several thOUSandthSnf an ineh iS Provided bethe material receiving chamber can be properly tween the peripheral portions ofthe spinner and p1aced before the nut 31 is tightened tormly the adjacent throat portion 15, the handle 47 as ho1d the rod 29 xed to the supporting lug 27. Shown, extends upwardly, and in this position a The guide slot and slide connection 4o at the for- Stop lJTojeCtiOn. 48' provided at the Side 0f the Ward portion of the supporting casting 11 is of a 120 ably adjusted within the threads of the small lug chamber to permit such adjustments. :o 5,0 of the handle so that when the stop nroieo- 'I'he motor shaft 13 extends downwardly within 125 t1 0n 48 iS engaged the Draper Clearance 1SP1'0, the material receiving chamber and .its lower ins between the spinner periphery andthe adiajecting end of this reduced portion surface rig- Cent Chamber portion may be easily and' quickly idly holds the spinner plate in its proper posiadjusted by rotational movements of the lever 47 tion on the end of the motor shaft. The spinner Which may be moved to any positiOn between the plate is preferably provided with one or more upoo two limits as defined by the stop 48 and by the wardly extending lingers 72 which project up 135 engagement 0f the betteln 0f the bearing DOI'- from the plate so as to be eiective in tearing apart tion 38 with the lug 27. 'I'he shaft 45 and the ad breaking up pieces of Solid or semi-Solid parte t0 Which it S Connected are held in Whetmatter which may be supplied to the material reever position they are moved to by means 0f the Vceiving chamber. Such solid or semi-solid ma- C5 fIiCtiOnal engagement 0f the inner end Surface teria] is also broken up or torn apart by means of 140 53 of the handle and the end surface 54 of the a, projecting ann A73 whichis mounted on the' i Supporting Casting 11. These tWO Surfaces are motor shaft Within .the chamber 16. This proil" lat and are DerDendiCulal te the aXiS 0f the Shaft/ jecting arm 73 is adapted to be assembled on the` Y 45. The end of the handle is yieldingly urged shaft by moving it upwardly in the direction of 70 into frictional contact with the surface 54 of the the axis of the motor shaft, and for this purpose 145 portion 46, and at its other end against the head spaced suitable distances above the top of the rv,a5 a guide post 40 whichls received 1n a guide slot direction generally towards the center of the shaft 100 them from rubbinsr upon one another. The Spae-A shaft passes, and a nut 71 threaded on the pro- 130 vthe upper end thereof.

' holes.

portions of the '13. This a`rm`, shown in Fig. 6 in adeveloped or stretchedoutstate,'is formed ofa sheet "of 'metal having ringportions' 78 and '79 each provided with'an opening adapted to receive the motor shaftl- Key 'slots inland-81 are provided in these portions of the a'rm,'and'the arm is bent into -bishape' so that thering portions 'I8 and '79 are parallel and spaced apart a distance equal to the spacing between the slots 76 and 77 in the key. The key and the bent U-shaped projecting arm '73 can thus be applied by an upward movement from the bottom of the chamber X16 before the spinner plate 20 is in place. The key slot in the motor shaft is only of suiiicient length as to receive the key, and the key is held in place to definitely hold the ring portions '78 and "19 in place by the spinner plate which is fastened to the lower end of the motor shaft.

A material aid in the collection of discharge spout 21 is provided to the material flowing from the machine, the spout being made removable to provide for ready access to the bottom of the m0- tor shaft and to permit the cleaning of the machine. The upper end of the spout iits upon and slidingly receives the cylindrical surface 83 formed on the bottom of the material receiving chamber 16, spring retainers 84 pivoted at 85 to the spout 21 serving to detachably hold the spout in place.

The motor armature shaft is provided with bearings adjacent the upper and-lower ends of the armature, the lower bearing being shown at 90 in Fig. 1. This bearing is received in a suit- -able depression provided in the boss 61 of the motor supporting casting 1l. Above the bearing, and below the bottom of the armature winding are fan blades 91 which are shaft so that when the motor is running the fans will be rapidly revolved and draw air into the casing 92 which surrounds the motor and which is provided with a series of openings 93 adjacent Cooling air is thus induced into the casing. To prevent liquid or -any other material from entering the openings 93 a curved cap plate 94 is fastened in place to the top of the casing by means of a nut 95 which is engaged with a suitable part of the upper bearing of the motor. The cap plate is provided with a central portion96 conforming in curvature to iixed to the motor the shape of the upper end of the casing, theperipheral portions 9'7 of the plate adjacent the openings 93 being spaced away from the underlying 'portions of the casing 92 to provide for a suilicient supply of air through the Ventilating The rear part of the motor supporting casting 1l is provided 'with an opening 100 which communicates with the space adjacent the fan blades 91 and which also communicates with an opening .101 in the upper end of the hollow standard 10. The air which casing 92 therefore may travel down through the openings 100 and 101 and through the hollow standard 10 and can then flow through the exit opening 102 at the bottom of the standard. The

is induced into the motor y standard isrpreferably mounted upon feet 106' of rubber or other suitable material so that the free pagf air from the bottom of the standard is pe 'tted. An opening 103 at the rear of the stana;

' f low interior and permits the cooling air from the motor to be Ydischarged at this place. The electrical connection 104 by meansy of which power is supplied to the electric motor may also extend through the opening'103, the wires extending up throughv the standard and through d also communicates with the holthe openings 101 and 100 and then to the motor. A control switch 105 provided in the side of the motorcasing 92 permits the starting and stoppingof the'motorwhenever desired. 'l While vthe'form 01E-apparatus herein described constitutes apreferred1 embodiment of-the'invention,'it'isto be understood that the 'invention' is not limited to this precise form of apparatus, and that changes may be made therein without departing from the scope of the invention which` is defined in the appended claims.

What is claimed is: 1. In a mixing device of the class described, a

support, a motor mounted in iixed position on vsaid support, a material receiving'chamber adjustably mounted on said support, a spinner fixed to the notor shaft and rotatably mounted closely adjacent a part of said chamber, means for guiding said chamber for reciprocatory adjustment on said support, and means for moving said chamber in the direction of the axis of the spinner to adjust theclearance between the spinner and the said part of the chamber, said means com prising a manually rotatable gear having Aan axis fixed .in said support and engaging a rack fixed to said chamber.

2. In a mixing device of' the class described, a support, a motor mounted in fixed position on said support, a material Vreceiving chamber ad-- said part of the chamber, said means comprising a manually rotatablegear having an axis fixed in said support and engaging a rack iixed to said chamber, and an adjustable stop limiting the rotation of said gear in one direction.

v3. In a mixing device of the class described, in combination, a hollow standard, a motor support fixed to said standard, an electric motor fastened to said motor support, a case extending over said motor and having holes therein through which Ventilating air may pass, a material receiving chamber mounted on said. motor support, a spinner mounted on the motor shaft closely ad'- jacent a part of said chamber, fan blades carried by 'said motor shaft, said motor support having a `passage therethrough registering with' the passage through the hollow standard and in communication with the spaceadjacent said blades so that Ventilating air for the motor may pass through the hollow standard and through the openings in thesaid motor casing for the ventilation ofthe 'motor'.

4. In a device of the class described, in combination,k a motor support, an electric motor mounted thereon, a material rece'ving chamber, a spinner" driven by said motor and mounted closely adjacent a part of the said chamber, said V4spirmer having a shaft extending through an upper wall of said chamber and having a threaded portion rotatably mounted .within said wall adapted to direct material downwardly into said chamber,

5. In a device ofthe class described, in combination, a motor support, an electric motor' mounted thereon, a' material receiving chamber, a spinner driven-by said motor alnd mounted closely adjacent a part of the said amber, said spinner having a shaft extending through an upper wall of said chamberand having a threaded portion rotatably mounted within said- Wall adapted to direct material downwardly into said chamber, the threads on said threaded portion having a slight clearance from the opening in the which they extend to permit adjustment of the axis of the spinner and of the and means for supporting the motor support to permit adjustment of the position of the chamber in relation to the spinner axis.

6. In a mixing device of combination,

chamber.

7. In a mixing device of the class described, in combination, a support, a chamber mounted on said support, a spinner rotatably mounted closely adjacent a part of said spinner. and the said part of the chamber.

8. In a mixing device of the class described having a support and a material receiving chamber mounted on said support, a spinner adapted to be rotatably mounted closely adjacent a part of said chamber said spinner including a shaft, a projection carried by said shaft having a portion surrounding the shaft, and adapted to be applied to the shaft in an axial direction, and key means for holding said projection to said shaft and spacing said projection from said spinner.

l 9. lIn a mixing device of the class described, in combination, a support, a motor mounted on said support, a material receiving chamber mounted on said support, a` spinner provided at the lower end of the motor shaft and embodying a plate portion mounted closely adjacent apart of said chamber and removably fastenedat the lower end of the motor shaft, a projecting arm keyed `to the motor shaft above said plate portion and adapted to be applied to the motor shaft by an upward movement in the direction of the axis of the shaft, and means movable axially of the shaft for denitely xin'g said arm in position on the shaft, said means being held in place by said plate portion. y

10. In a mixing device of the class described, a support, a motor xedly mounted on said support,

,a chamber mounted on said support for" axial the motor shaft and receiving opening at opening at the other movement with respect to provided with a material one end and a discharge end, a spinner xed to the motor shaft so as to be rotated thereby at high speed closely adjacent a part of said chamber, a manually operable device offset from the motor shaft and connected to the chamber for instantly relatively adjusting the position of the motor and chamber a substantial amount, and additional means for accurately adjusting the normal operative positioning of the motor and chamber. v

. LINUS J. PARKER. 

